Resistance Meters

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Winding Resistance Meter

Raytech Digital Winding Resistance meter WR100-12R is the enhanced version winding resistance system with a most advanced demagnetizing circuit as a rack version. It is designed for high degree of accuracy for the measurement of very low resistance of any inductive loads.
Unique Measuring Technique - This newly designed technique of measurement incorporates a high precision measurement circuit, a unique power source and the fastest discharge unit on the market.
Operation - The WR series of instruments apply a preset current level, selected by the user, from 0.025A to 100A . The results are reported on the easy-to-read color LCD display and can be stored or printed.
Advanced Protection - Upon powering on the system initializes itself with a self-calibrating, circuit checking sequence. If any problem is detected during initialization or operation, the operator immediately will be notified. The system constantly monitors the condition when turned on. The WR series have extensive protection built in to the circuitry. This is one of the many reasons we can extend our warranty to 2 years.

Features :

Highest Accuracy and Precision of any high current test system
Automatic measurements of Low Resistance from 0.00µΩ .100kΩ
Demagnetizing Circuit (Advanced design)
Microprocessor based system with internal storage for over 10000 test results
Data exchange via USB-Key or USB / RS Connection
Storage and Printing of test results with an external printer while the test system is measuring
Complete automatic calibration system and system diagnostics
Temperature channels with automatic resistance correction
Standard USB 2.0 & RS232 (serial) Interface
Pure filtered DC Power source for the highest accuracy readings
Automatic, high efficiency cooling system to dissipate internal heat
Automatic shut off for over-temperature condition
Color LCD with backlighting and touch screen
Panel mounted Emergency Stop Switch
19" rack-mounting casing
Fully automatic cooling curve analysis (option AHRT 01)
Fastest discharge time in the market
2 Year standard warranty

Specification :

Model - WR100-12R
Size L - 490 mm (19.3”) W - 436 mm (17.2”) H - 310 mm (12.2”), Rack Unit - 7U
Weight 21.9 kg (48.3 lbs.)
Input Power 90 to 264 VAC (3 kW max.), 47.63 Hz, automatic ranging
Output Voltage 0 to 50 V DC
Test Current user selectable - 25 mA . 100 A
Color LCD with back lighting and touch screen
Front Panel Sealed, Anodized
Interfaces - 4 USB 2.0 full speed (3 host, 1 device) and 9 Pin RS232 serial
Memory Storage Internally stores more than 10 000 test results
Temperature Operating –10°C to +60°C, Storage –20°C to +70°C
Resistance Range - 0.00 µΩ to 100 kΩ
Inductance Range - 0 Henry to 1500 Henry
Temperature - Operating -10°C to +60°C
Storage - -20°C to +70°C

Accuracy

Current Range	Measuring Range	Accuracy	Resolution
30 - 100 A	0.00 µΩ ... 1.7 Ω	± 0.1% Rdg ± 0.05 µΩ	5 Digits or 0.05 µΩ
15 - 30 A	0.0 µΩ ... 3.3 Ω	± 0.1% Rdg ± 0.1 µΩ	5 Digits or 0.1 µΩ
8 - 15 A	0.0000 mΩ ... 6.3 Ω	± 0.1% Rdg ± 0.2 µΩ	5 Digits or 0.2 µΩ
3 - 8 A	0.0000 mΩ ... 16.7 Ω	± 0.1% Rdg ± 0.5 µΩ	5 Digits or 0.5 µΩ
1 - 3 A	0.000 mΩ ... 47.2 Ω	± 0.1% Rdg ± 1 µΩ	5 Digits or 1 µΩ
0.7 - 1 A	0.000 mΩ ... 71.4 Ω	± 0.1% Rdg ± 2 µΩ	5 Digits or 2 µΩ
0.3 - 0.7 A	0.000 mΩ ... 167 Ω	± 0.1% Rdg ± 5 µΩ	5 Digits or 5 µΩ
0.1 - 0.3 A	0.00 mΩ ... 500 Ω	± 0.1% Rdg ± 10 µΩ	5 Digits or 10 µΩ
25 - 100 mA	0.00 mΩ ... 2 kΩ	± 0.1% Rdg ± 20 µΩ	5 Digits or 20 µΩ
< 25 mA	2 kΩ ...10 kΩ	± 0.2% Rdg ± 200 mΩ	5 Digits or 200 mΩ
< 25 mA	10 kΩ ...100 kΩ	± 0.8% Rdg ± 20 Ω	4 Digits or 20 Ω